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I have to answer questions on a website for my class by 11:00pm tonight. The web

ID: 1665565 • Letter: I

Question

I have to answer questions on a website for my class by 11:00pm tonight. The website we answer them on will only accept theanswers if you get them correct and I keep solving and resolvingbut it keeps telling me I have the wrong answer. If I don't enterthe correct answer by 11pm tonight I won't get any credit for myhomework. Help!! A charge of 6.52 mC is placed at each corner of a square0.210 m on a side. Determine the magnitude of the force on eachcharge.
I tried this one and got 1.6 x 10^7 but that was wrong

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- What is the magnitude of the electric force on an electron in auniform electric field of strength 2760 N/C that points due east?What is the direction of electric force on an electron
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- Suppose that electrical attraction, rather than gravity, wereresponsible for holding the Moon in orbit around the Earth. Ifequal and opposite charges Q were placed on the Earth and the Moon,what should be the value of Q to maintain the present orbit? Usethese data: mass of Earth = 5.98 x 10^24 kg, mass of Moon= 7.35 x10^22 kg, radius of orbit = 3.84 x 10^8 m. Treat the Earth and Moonas point particles. I got 16.60C for this one, but the website told me that waswrong.
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- Two point charges, Q1 = -28 micro-C and Q2 = 56 micro-C, areseparated by a distance of 12 cm. The electric field at the point P(see figure) is zero. How far from Q1 is P?
(Figure is given by the link below)
http://session.masteringphysics.com/problemAsset/1096840/5/GIANCOLI.ch16.p36.jpg
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- Determine the magnitude of the electric field at the point Pshown in the figure. The two charges are separated by a distance of2a. Point P is on the perpendicular bisector of the line joiningthe charges, a distance x from the midpoint between them. Expressyour answers in terms of Q, x, a, and k. Determine the direction ofthe electric field at the point P.
(Figure is given by the link below)
http://session.masteringphysics.com/problemAsset/1096844/3/GIANCOLI.ch16.p40.jpg
I got 2kQ/(a^2 +x^2) (sin(tan^-1(a/x)) for this one, but thewebsite said that was wrong.
I have to answer questions on a website for my class by 11:00pm tonight. The website we answer them on will only accept theanswers if you get them correct and I keep solving and resolvingbut it keeps telling me I have the wrong answer. If I don't enterthe correct answer by 11pm tonight I won't get any credit for myhomework. Help!! A charge of 6.52 mC is placed at each corner of a square0.210 m on a side. Determine the magnitude of the force on eachcharge.
I tried this one and got 1.6 x 10^7 but that was wrong

-------------------------------------------------------------------------------------------------
- What is the magnitude of the electric force on an electron in auniform electric field of strength 2760 N/C that points due east?What is the direction of electric force on an electron
--------------------------------------------------------------------------------------------------
- Suppose that electrical attraction, rather than gravity, wereresponsible for holding the Moon in orbit around the Earth. Ifequal and opposite charges Q were placed on the Earth and the Moon,what should be the value of Q to maintain the present orbit? Usethese data: mass of Earth = 5.98 x 10^24 kg, mass of Moon= 7.35 x10^22 kg, radius of orbit = 3.84 x 10^8 m. Treat the Earth and Moonas point particles. I got 16.60C for this one, but the website told me that waswrong.
--------------------------------------------------------------------------------------------------
- Two point charges, Q1 = -28 micro-C and Q2 = 56 micro-C, areseparated by a distance of 12 cm. The electric field at the point P(see figure) is zero. How far from Q1 is P?
(Figure is given by the link below)
http://session.masteringphysics.com/problemAsset/1096840/5/GIANCOLI.ch16.p36.jpg
----------------------------------------------------------------------------------------------------
- Determine the magnitude of the electric field at the point Pshown in the figure. The two charges are separated by a distance of2a. Point P is on the perpendicular bisector of the line joiningthe charges, a distance x from the midpoint between them. Expressyour answers in terms of Q, x, a, and k. Determine the direction ofthe electric field at the point P.
(Figure is given by the link below)
http://session.masteringphysics.com/problemAsset/1096844/3/GIANCOLI.ch16.p40.jpg
I got 2kQ/(a^2 +x^2) (sin(tan^-1(a/x)) for this one, but thewebsite said that was wrong.

Explanation / Answer

Determine the direction and magnitude of the electric field at the point P in the figure below. The charges are separated by a distance 2a, and point P is a distance x from the midpoint between the two charges. Use the following as necessary: Q, x, a, and k. magnitude E =